This is pretty chilling.  A man named Randy Scott was trapped inside the World Trade Center on 9/11, and before he died, he wrote a note to get help and threw it out an open window.  It said, quote, "84th floor.  West office.  12 people trapped."

--Someone on the ground found it THAT day, right before the building collapsed.  Then it was passed around for 10 years until DNA was used to match a spot of blood on the note to Randy. And last year, the note was finally given to his wife, Denise.  She's agreed to put the note in a museum at the 9/11 memorial.